OEM USB 2.0 Digital Optical Audio Sound Card External 7.1 Channel 5.1 USB Sound is an USB audio controller.It supports 32KBz,44.1khz.(which two need driver or application software support)and 48KHZ sampling rate in digital recording,48KHZ sampling in analog recordin and 48KHZ in digital/analog audio playback. In digital playback mode,it receives audio stream from PC via USB interface and transmits audio data according to the AES/EBU,IEC60958,S/PDIF consumer interface standards.Only R,L channel PCM audio in 5.1 channel can be conveyed in digital playback mode.In analog playback mode,it supports 6 channels codec for analog playback. In digital recording mode,it receives S/PDIF digital audio input and sends back to PC through USB.Three sampling rates;includes 32KHZ,44.1KHZ are automatically locked internally,in analog recording mode,fixed 48khz sampling rate is supported by analog audio recording plug and play Supports SES/EBU,IEC60958,S/PDIF consumer formats for stereo PCM audio Fixed 48KHZ sampling rate for 5.1 channel playback. Supports analog recording function Supported SCMS copy protection Compatible with Win98SE,ME,2000,XP,Mac OS 9.1 Fully duplex playback/recording audio stream without sound card in PC Compliant with USB specification v1.1 Compliant with USB audio device class v1.0 Supports USB full speed 12Mbit serial data transmission 3 input terminals 3 output terminals Alternate setting 0 is a zero-bandwidth setting used to release the claimed bandwidth on the bus when this device is inactive Isochronous transfer uses adaptive and asynchronous synchronization Support multi channels audio code interface for 5.1 channel
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